dimagi/commcare-hq — pull request #5135 by nickpell (2014-12-19 21:18:50+00:00)
Title: validate aggregation field in report config

![screen shot 2014-12-19 at 4 15 57 pm](https://cloud.githubusercontent.com/assets/1757035/5511347/5a423efe-879a-11e4-86e5-a15bc5069a0e.png)